Frame material is Rubber Touch Plastic frame frame
Lenses are gradient. So it easier to read while your eyes are protected lens lens lens
Lens width: 1.8 inches
CLASSIC WITH SPRING HINGE AND RUBBER TOUCH: The sturdy frame features a timeless classic de-sign, making these bifocal reading sunglasses a staple year after year. Piet really wears comfortable because of the matte finish frame and spring hinge.
BIFOCAL PRESCRIPTION SUNGLASSES: The Piet reading glasses has its reading compartment inside the glasses. Therefor the sunglasses have almost an invisible line. The Piet reading bifocal glasses are available in 1.50, 2.50 and 3.00.